let word = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

// 随机生成 32位 随机字符串
function createCardkey() {
    let str = '';
    for (let i = 0; i < 32; i++) {
        str += word[parseInt(Math.random() * word.length)];
    }
    return str;
}

module.exports = createCardkey;